casio inc. hr-100tm mini desktop printing calculator - Walmart.com
Amazon.com : Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural : Office Products
CALCUSEUM(XL) CASIO: FX78
Andrew Braybrook on X: "Here are my two trusty calculators from the `80s. Both still working, both do hex. Might even be the original battery in the fx-570. I bought the solar-powered
Casio fx-602P from 1981 - The best calculator Casio ever made? - YouTube